We found one dictionary that defines the word menaceful:

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1. menaceful: Wiktionary

Definitions from Wiktionary (menaceful) ▸ adjective:  Full of menace; threatening. ▸ Words similar to menaceful ▸ Usage examples for menaceful ▸ Idioms related to menaceful ▸ Wikipedia articles (New!) ▸ Popular nouns described by menaceful ▸ Words that often appear near menaceful ▸ Rhymes of menaceful ▸ Invented words related to menaceful